Improvement in steam-regulator valves



a. sumen` Steam*Regulator-Valves.

Patented lqly 21,1874.

Y m M YW# .l.. H

@wwwa I nhrntnr UNITED STATES PATENT OFFICE.

GEORGE SUMNER, OF LOWERv MERION, PENNSYLVANIA.

IMPROVEMENT lIN vSTEAM-REGULATOR VALVES.

Specification forming part of Letters Patent No. 153,394, dattd July 2l,1874; application ilcd June 5, 1874.

To all whom it may concern:

Be it known that I, GEORGE SUMNER, of Lower Merion, county of Montgomeryand State of Pennsylvania, have invented a new and useful Improvement inSteam-Regulator Valves; and I do hereby declare the following to be aclear and exact description of the nature thereof, sufficient to enableothers skilled in the art to which my invention appertains t0 fullyunderstand, make, and use the same, reference being had to theaccompanying drawings making part of this specification, in which-Figure l is a central longitudinal vertical section of the deviceembodying` my invention. Fig. 2 is a similarl view of a detached part.

Similar letters of reference indicate corresponding parts in the twogures.

My invention consists in means for regulating the pressure of steam orother fluids. It also consists in a combined steam-regulator andsafety-valve.

Referring to the drawings, A represents the shell or body of theregulating-valve, within which, on one side, is formed anupwardly-projecting semi-cylindrical wall, a, and on the opposite side adownwardly-projecting semi-cylindrical wall, b, thus leaving a centralspace, within which, and from the upper and lower ends of the walls a Z,respectively, is suspended a cylindrical valve-seat, B, which is open attop and closed at bottom, and has a series of perforations, c, in itsface. C represents a cylindrical valve, which, surrounding the seat Bfrom below, is open at top, has a closed face, and a bottom with aseries of perforations, d. A tube or pipe, l), is secured to the bottomof the seat B, extends upwardly through the same, then through a plug,G, at the top of the shell A, and opens Ainto a chamber, H, formed by acylindrical shell or tube, J, above the plug G. 'lo the valve C issecured a hollow stem or pipe, F, which passes through the tube D and isconnected to the movable seat K of an escapevalve, L, both of which arearranged in the chamber H. The seat K fits snugly in the chamber H andhas its bottom provided with a series of perforations, e. The valve Lrests on the top of the seat K, and has a diameter less than that of thechamber H, so that a space, f, is left between the wall of the chamber Hand periphery of the valve L. To 'the valve is connected a stem, M,which passes upwardly through the top ofthe table J and from the upperend of said stem is suspended a swinging clevis, N, to which ispivotedthe weighted lever or rod P, whose fulcrumis on a standard, B, whichrises from a ring, S, journaled to the shell or tube J. T represents apipe, which is connected to the cylindrical shell J, and provides meansof communication between the chamber H and the atmosphere. A space, g,is left between the seat B and valve C, and a space, h, is left betweenthe valve C and adjacent portion of the shell Aand the wall c. A space,7.', will also be left between the bottoms of the valve C and shell A.The two faces of the seat B and valve C are shown atm m.

The operation is as follows: The amount or pressure of steam requiredfor a particular purpose having been predetermined, the weight of thelever P is moved so as to uncover the perforations d of the valve C, andthus adjust the latter relatively to said amount or pressure. The steamis admitted by the induction-branch U and enters the open-topcylindrical seat B, then escapes through the perforations c, one volumepassing through the space g to the bottom space k of the shell A, andanother volume passing through the space h into the cylindrical valve C,and reaching the bottom space k ot the shell A through the perforationsd in the bottom of the valve O. The steam from the bottom spacek thenpasses to the eductionbranch V, through the space m, between the valve Cand adjacent portion of the shell A below the said branch, and joinssuch steam as may pass from the perforations of the seat B which are onthe side toward the branch. When the steam reaches the body of thecylindrical valve C a quantity thereof escapes through the tube D andjoins in the chamber H, above the bottom ofthe seat K, a quantity ofsteam that passes from the bottom space k through the hollow stem F, sothat the movable seat K and valve L in said chamber H are acted upon bythe steam in a manner to be stated.

It will be seen that steam surrounds the cylindrical valve C on theinside and outside of its surface and on the two faces of its bottom, sothat there is an equilibrium of pressure of steam on said valve. Theaction of the steam on the movable seat- K also serves to hold up thevalve G to its adjusted position, the seat K and valve L being kept toeach other by the Weight, and moving together as a piston so long as thepressure. of steam is not in excess of the weight on the rod P.

When the pressure of steam decreases the valve C falls, and thusuncovers more of the perforations of the valve-seat B, whereby moresteam is passed to the eduction-branch. When the determined pressure isattained the valve G again rises and properly acts on the perforationsof the valve-seat. Should the pressure increase the valve C is elevated,and thus covers the perforations of the valveseat. Should the pressurefurther increase, and thus become dangerous, it overcomes the action ofthe Weight-rod and lifts the valve L in the chamber H, so that steamimmediately escapes through the pipe, and the danger is averted.

The journaled or swiveled ring S permits the weight-rod P to be swungaround in any desired position, so as to be located relatively to theconveniences of the room in which the device is placed.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In the case A, the combination of the cylindrical valve C andcylindrical seat B, provided With faces m and perforations o d,substantially as and for the purpose set forth.

2. The escape-valve, consisting of the two detached parts K L, iucombination with the regulating-valve C and intermediate tube F, andwith the weight-rod P, substantially as and for the purpose set forth.

3. The cylindrical valve C, and seat B, and piston-valve K, inconnection with the hollow rod D, forming a communication between theshell A and piston-valve chamber H, and

Weighted rod P, substantially as and for the purpose set forth.

GEORGE SUMNER.

Witnesses:

J oHN A. WIEDERSHEIM, JNO. D. PATTEN.

